Medical sensor

• US 5,413,102 A
• Filed: 05/18/1994
• Issued: 05/09/1995
• Est. Priority Date: 05/15/1992
• Status: Expired due to Fees

• Current Assignee: Philips Electronics North America Corporation (Koninklijke Philips N.V.)
• Original Assignee: Hewlett-Packard Company (HP Inc.)
• Inventors: Schmidt, Michael, Schlueter, Malte
• Primary Examiner(s): Sykes, Angela D.
• Application Number:
  US08/245,665
• Time in Patent Office: 356 Days
• Field of Search: 128/632-634, 128/664-667, 356/39-41
• US Class Current: 600/310
• CPC Class Codes: A61B 5/02427 Details of sensor
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/6816 Ear lobe
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6829 Foot or ankle
• CPC Class Codes: A61B 5/6838 Clamps or clips

Abstract

A medical sensor for monitoring vital signs, in particular oxygen saturation, consists of a flexible carrier carrying the transmitter and receiver elements, and a housing element specifically adapted for application to a part of the human body, such as a finger. The flexible carrier may be used with a variety of different housing elements, such that it can be applied to virtually any limb or other part of the human body.

Claims

1. A medical sensor for monitoring vital signs of a human being by means of electromagnetic waves transmitted through or reflected by human tissue, said medical sensor comprising:

flexible carrier means carrying at least one transmitter element and one receiver element;

a separate housing element specifically adapted for application to a part of the human body; and

releasable connection means for releasably connecting together said flexible carrier means and said housing element, said housing element shaping said flexible carrier means into a configuration for effective monitoring of vital signs at said human body part.

2. Medical sensor according to claim 1, wherein said flexible carrier means includes:

a flexible layer to which said transmitter element and said receiver element is attached; and

a flexible carrier body for carrying said flexible layer.

3. The medical sensor according to claim 2, wherein said flexible layer is made from polyimide.

4. The medical sensor according to claim 2, wherein said flexible layer comprises conductive leads with contact pads for interconnection of said transmitter element and said receiver element.

5. The medical sensor according to claim 2, wherein said flexible carrier body comprises:

a lower body portion; and

an upper body portion;

whereby

said lower body portion and said upper body portion are provided with body connection means for interconnection of said lower body portion and said upper body portion.

6. The medical sensor according to claim 1, wherein said transmitter element and said receiver element are optical elements.

7. The medical sensor according to claim 8, wherein said transmitter and receiver elements are, respectively, a transmitter LED and a receiver photodetector.

8. The medical sensor according to claim 1 adapted for monitoring oxygen saturation of a human body part.

9. The medical sensor according to claim 1, comprising a kit of housing elements, each said housing element in said kit specifically adapted for application to a different part of the human body, said flexible carrier means defining a universal flexible carrier body which can be connected to any one of said housing elements in said kit.

10. A flexible carrier device for monitoring vital signs of a human being by means of electromagnetic waves transmitted through or reflected by human tissue, said flexible carrier device comprising:

a flexible carrier body including a lower body portion and an upper body portion;

body connection means for interconnection of said lower body portion and said upper body portion;

a transmitter element and compatible receiver element;

a flexible layer to which at least said transmitter element and at least said receiver element are attached; and

releasable connection means for releasably connecting said flexible carrier device with a separate housing element and conforming said flexible carrier device to a desired shade supported by the housing element.

11. The flexible carrier device according to claim 10, wherein said body connection means is of plastic material.

12. The flexible carrier device according to claim 11, wherein said plastic material is colored silicone.

13. The flexible carrier device according to claim 10, wherein said flexible layer is made from polyimide.

14. The flexible carrier device according to claim 10, wherein said flexible layer comprises conductive leads with contact pads for interconnection of said transmitter element and said receiver element.

15. The flexible carrier device according to claim 10 adapted for monitoring oxygen saturation of a human body part.

16. The flexible carrier device according to claim 10, wherein said releasable connection means releasably connects said flexible carrier device to any one of a plurality of differently configured housing elements.

17. A housing element for use in a medical sensor for monitoring vital signs of a human being by means of electromagnetic waves transmitted through or reflected by human tissue, said housing element including releasable connection means for releasably connecting said housing element with a separate flexible carrier means, said housing element specifically adapted for shaping the flexible carrier means into a configuration for application to a part of the human body.

18. The housing element according to claim 17 having recesses defining said connection means.

19. The housing element according to claim 18, wherein said recesses have side walls having projections, in order to provide a snap-on connection.

20. The housing element according to claim 17, wherein said releasable connection means is specifically adapted to accommodate a universal flexible carrier means for a plurality of different configurations of said housing element.